laporte



(No Model.) 2 Sheets-Sheet 2.

J.O.LAPORTE.

I I AUTOMATIC GATE. No. 604,402. Patented May 24, 1898.

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JOSEPH OAMILLE LAPORTE, OF MANIVAKI, CANADA.

AUTOMATIC GATE.

SPECIFICATION forming part of Letters Patent No. 604,402, dated May 24, 1898. Application filed September 25, 1897. Serial No. 653,072. (No model.) Patented in Canada July 26,1897,N0. 56,797.

To all whom, it may concern.-

Be it known that I, J osErH CAMILLE LA- FORTE, parish priest, of Maniwaki, in the county of Wright, Province of Quebec, Canada, have invented certain new and useful Improvements in Automatic Gates, (patented in Canada by Letters Patent of July 26, 1897, No. 56,797;) and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part thereof.

The object of my invention isto provide a gate that will beopened by the wheel of a carriage or Wagon passing over a cranked bar or other projection placed in the road-bed in the track of the wheel and a short distance -before the gate is reached and that will be closed and latched by the wheel passing over a similar projection after the vehicle has.

passed through the gate.

In the drawings, Figure 1 is a plan showing the arrangements of the gate-posts, the. Fig. 2 is an elevation showing the gate open. Fig. 3 is an elevation showing the gate shut. Fig.

4 is a detail view of the pulley forming the lower hinge of the gate. Fig. 4 is a section of the lower hinge of the gate. Fig. 5 is a detail view of one of the latches. Fig. 6 is a detail of one of the devices for operating the gate.

The gate-posts 10 and 11 are respectively the hinge-post and locking-post. The upper hinge consists of a hinge-pin 13, journaled and free to slide vertically in an eye 14, secured in the post, a spring 15 being coiled on the said hinge-pin and tending to keep down the gate on its lower hinge. The lower hinge consists of a pin 16, journaled in a socket in a stud 18, formed integrally with a bracket 18, secured to the lower part of the gate-post 10. On this stud is journaled a pulley 17.

The upper face of the said pulley 17 is provided with an annular rim 19. This rim is low at one side and comparatively high at the 23, secured to the lower part of the gate, runs on these inclined planes 20 and 21.

The gate 12 is composed of the top rail 24, bottom rail 25, lock-stile 26, and hanging- .stile 27, and may be filled in in any suitable manner. It is braced by diagonal braces 28 and 29. The brace 28 passes from the upper portion of the gate at the hanging-stile 26 and under the bottom rail near the center, and is attached to a tightening device consisting of a bolt 30, passing through an eye 31 in the hanging-stile, and a draw-nut 32. The other diagonal brace 29 passes over the top bar of the gate about midway of its length and under the bottom rail near the lockingstile, where it is provided with a bolt 34 and a draw-nut 35, the bolt passing through the locking-stile.

The fastening device consists of a latch-bar 36, secured rigidly to the gate, and a catch 37, pivoted to the post 11. This catch has 011 one side of the pivot a handle 38 and on the other side anotch 39 to receive the latch-bar. The'front 40 is rounded OK, so that the latchbar depresses it, and a projection 41 is made behind the notch 39, so that the latch-bar does not pass the notch, but by hearing against it tends to raise the catch. A stop-pin 42 is placed behind the projection 41and a spring 43 raises the catch and holds it in position. Another post 44 holds the gate when in the open position. This post is provided with a catch 45, which is similar in every respect to the catch 37 The hinge-post 10 is provided with brace-rods 46, their lower ends being anchored in the ground and their upper ends provided with bolts and draw-nuts 47, one of these rods being opposite the post 11 and the other opposite the post 44.

As 'far as described the operation of the device is as follows: As before stated, when the gate is in its closed position the pulley 17 has the lowest portion of its rim facing the post 11, and the roller 22, which carries the weight of the gate, rests on this low portion, the gate being so adjusted as to permit the latch-bar to engage the notch 39 in the catch 37. If the pulley is turned so that the lowest portion of its rim is opposite the post 44," the roller 22, running up the inclined plane 21, raisesthe gate bodily. The latch-bar is thus suflicient force to engage the .catch'efionther post 44, and it is held in that position. When thepulley-l7is returned to its former position, the roller 'runsfup the other inclined plane 20, and the operation of closing the gate is similar tothe manner of opening. The spring on the top hinge 15 tends to keep the roller steady on the inclined planes and also assists the gravitation. It will be seen that it is important for the sure working of the gate that it should be adjustable, so as to take up any sagging, and thereby insure the catches and latch-bar engaging.

The pulley 17 is operated by the following device: At the side of the roadway, passing through the gate and at a convenient distance from it, are two pulleys 50, one on either side of the gate. 'The axles 51 of these pulleys are journaled in suitable bearings and have upwardly-projecting cranks 52 placed in the track of the wheel of the vehicles approaching the gate. Chains or chains and wires or rods 53 connect these pulleys with the pulley 17. Weights 54: are secured to these pulleys to return the cranked axles to their normal position after being depressed, and the wires or chains are so arranged that when either of the cranked axles is depressed toward the gate the pulley 17 is turned, with the lower part of its rim toward the gate-post 44:, thus causing the gate to open, as above described, so that the Wheel of a vehicle approaching the gate and passing over the cranked axle will open the gate, and after passingthrough will depress the other axle from the gate, turning the pulley so that the lower part of its rim is opposite the post 11, thereby closing the gate. The chains are so slack that when the gate is closed the de-.

pression of one crank does not move the 0pposite one, simply tightening one of the chains connecting it with pulley 17, and also so that the depression of said first crank will not prevent the crank from being brought back by the weight attached to it to its original position.

The chains and wires or rods 53 and the pulleys may beboxed in, although shown in the drawings uncovered.

The gate is easily opened by hand by pedestrians, as it moves independently of the operating-gear, and the catch on the gatepost is provided with a handle for that purpose.

-Having now fully described my invention, Whfl'fI claim is 1. In combination with a gate having a pivot-pin and a roller on its under side, a disk having raised cam-faces for said roller to run on and a fixed centrally-bored stud which receives the said pin internally and the said disk externally, serving as a bearing for both, substantially as set forth.

2. In combination with a gate having a pivot-pin and a roller on its under side, a disk having raised cam-faces for said roller to run on, means for revolving the said disk, a fixed centrally-bored stud, which receives the said pin internally and the said disk externally, a latch-bar rigidly attached to the gate, a catch actuated by a spring on the lockingpost, and a similar catch on the post holding the gate open, the said raised cam-faces being adapted to raise the gate and so disengage the rigid latch bar from the springcatches as the disk is revolved and to allow the roller carrying the gate to run down the inclined cam-faces, substantially as set forth.

3. In combination with a gate having a pivot-pin and roller'on its under side, a pulley having raised cam-faces, for the said roller to run on, a fixed centrally-bored stud which receives the said pin internally and the said disk externally serving as a bearing for both, a weighted chain passing around the said pulley and means enabling a passing vehicle to actuate said chain, substantially as set forth.

4:. In a gate the combination with the rigid latch-bar secured to the gate of the pivoted catch on the gate-post, the said catch consisting of a rounded front portion 40, a notch 39, projection 41, a stop 42 engaging the said projection, a handle 38, and a spring 43 adapted to hold the said catch in its normal position, substantially as set forth.

In testimony whereof I have signed in the presence of the undersigned witnesses this 7th day of June, A. D. 1897.

JOSEPH OAMILLE LAPORTE.

Witnesses:

JAMES MARTIN, T. LAOOURCIERE. 

